Well, wonder no longer. The Daily Telegraph is here to answer life’s big questions and with the help of our friends at SEA LIFE Sydney Aquarium we think we’ve got this one sorted. Aquarium marine ...

Sleep is one of the most essential parts of being human. Catching some Z’s is important for daily functioning. As adults, we've got to get in about eight hours a day, according to the Sleep Foundation ...

Sleep in fish may look different from humans, but rest is essential for survival. Here’s what experts have to say about fish sleep. A protective mucous cocoon surrounds this parrotfish as it sleeps in ...

Tom has a Master's degree in Journalism. His editorial work covers anything from archaeology and the environment to technology and culture. Tom has a Master's degree in Journalism. His editorial work ...

Take a look at the gorgeous parrotfish in a tropical ocean scene in this Instagram post. The vibrant fish shows off its bright blue and yellow coloration. Now, take a closer look. Can you see the ...

Culum Brown does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...

Scientists have hooked a fish that suffers from insomnia in their quest to understand the genetics behind sleep disorders. Even zebrafish - a common aquarium pet - can have a genetic mutation linked ...

Many grad students can sympathize with the blind form of the Mexican tetra. Researchers speculate they sleep only a few hours a night, because they simply don't have time to rest. "These fish live in ...